PIC16LF1934T-I/MV - 8-bit MCU, 7KB Flash, 32MHz, UQFN-40
MPN: PIC16LF1934T-I/MV ✓ Hoạt độngPIC16LF1934T-I/MV Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, RAM, and peripherals on a single die; the PIC16 family uses a RISC-based Harvard architecture with a 14-bit instruction word optimized for deterministic interrupt latency and low code density. Within the broader microcontroller taxonomy, 8-bit MCUs sit below 16-bit and 32-bit cores in raw throughput but dominate cost-sensitive and ultra-low-power applications where every microwatt of quiescent current matters.
Key features include 35 digital I/O lines, five 8-bit timers plus one 16-bit timer, a 10-bit ADC with up to 14 channels, two comparators, five PWM modules with capture/compare, an EUSART for asynchronous serial, two I2C/SPI MSSP peripherals, and a capacitive touch mTouch peripheral. The nanoWatt XLP technology drops quiescent current to roughly 50 nA in sleep mode and below 1 µA in real-time-clock operation from a 1.8 V supply, supporting multi-year coin-cell life.
The device is built on a CMOS process with a wide 1.8 V to 3.6 V supply range and operates across -40 °C to +85 °C industrial temperatures. Its integrated LCD driver supports up to 96 segments, enabling direct glass drive without an external charge-pump or controller. On-chip peripherals like the 32 kHz oscillator timer, brown-out reset (BOR), and watchdog timer reduce external component count for compact sensor and user-interface modules.
Typical applications include small home-appliance keypads, battery-powered sensor nodes, consumer remote controls, low-cost instrumentation front-ends, capacitive-touch human-machine interfaces, and white-goods or HVAC user-interface boards. Designers choose the PIC16LF1934 for its combination of integrated LCD, mTouch, and very low sleep current in a compact 40-pin QFN footprint.
When designing with this MCU, ensure decoupling capacitance is placed within 5 mm of VDD/AVDD and that the exposed pad (EP) is soldered to a properly grounded copper pour to meet thermal and electrical performance. Use the MPLAB X IDE with the XC8 compiler and PICkit or ICD programmer to debug and program the device in-circuit.
This page synthesizes real-time distributor pricing, same-brand drop-in pin-compatible alternatives, and practical low-power design notes that are not consolidated in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC16LF1934T-I/MV — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16LF1934T-I/MV (cùng hình factor và footprint) — khác nhau ở I/O Pins, Package, Operating Temperature, Program Memory (Flash), LCD Driver.
PIC16LF1934-I/MV
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| Core Architecture | 8-bit PIC RISC (Harvard) |
| Family | PIC16LF193x |
| Instruction Set Width | 14-bit |
| Program Memory (Flash) | 7 KB |
| Data EEPROM | 256 bytes |
| Data SRAM | 256 bytes |
| Maximum CPU Frequency | 32 MHz |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 35 |
| ADC | 10-bit, up to 14 channels |
| Timers | 5 x 8-bit + 1 x 16-bit |
| PWM Modules | 5 |
| Comparators | 2 |
| Communication | 1 x EUSART, 2 x MSSP (I2C/SPI) |
| LCD Driver | Up to 96 segments |
| Capacitive Touch | mTouch peripheral |
| Low-Power Mode | nanoWatt XLP, ~50 nA sleep |
| Nhiệt độ hoạt động | -40 °C to +85 °C (Industrial) |
| Hộp | 40-pin UQFN (MV) 5x5 mm |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16LF1934T-I/MV
| Chân 1 | RA0/AN0 — Bidirectional I/O / ADC channel 0 |
| Chân 2 | RA1/AN1 — Bidirectional I/O / ADC channel 1 |
| Chân 3 | RA2/AN2 — Bidirectional I/O / ADC channel 2 |
| Chân 4 | RA3/AN3 — Bidirectional I/O / ADC channel 3 / VREF+ |
| Chân 5 | RA4/AN4 — Bidirectional I/O / ADC channel 4 |
| Chân 6 | RA5/AN5 — Bidirectional I/O / ADC channel 5 |
| Chân 7 | RA6/OSC2 — Bidirectional I/O / crystal oscillator output |
| Chân 8 | RA7/OSC1 — Bidirectional I/O / crystal oscillator input |
| Chân 9 | VDD — Positive supply voltage (1.8V-3.6V) |
| Chân 10 | VSS — Ground reference |
| Chân 11 | RB0/INT — Bidirectional I/O / external interrupt |
| Chân 12 | RB1 — Bidirectional I/O |
| Chân 13 | RB2 — Bidirectional I/O |
| Chân 14 | RB3 — Bidirectional I/O |
| Chân 15 | RB4 — Bidirectional I/O |
| Chân 16 | RB5 — Bidirectional I/O |
| Chân 17 | RB6/ICSPCLK — Bidirectional I/O / ICSP clock |
| Chân 18 | RB7/ICSPDAT — Bidirectional I/O / ICSP data |
| Chân 19 | RC0 — Bidirectional I/O |
| Chân 20 | RC1 — Bidirectional I/O |
| Chân 21 | RC2 — Bidirectional I/O |
| Chân 22 | RC3 — Bidirectional I/O |
| Chân 23 | RC4 — Bidirectional I/O |
| Chân 24 | RC5 — Bidirectional I/O |
| Chân 25 | RC6 — Bidirectional I/O |
| Chân 26 | RC7 — Bidirectional I/O |
| Chân 27 | RE3/MCLR — Input only / Master Clear (reset) |
| Chân 28 | RD0 — Bidirectional I/O |
| Chân 29 | RD1 — Bidirectional I/O |
| Chân 30 | RD2 — Bidirectional I/O |
| Chân 31 | RD3 — Bidirectional I/O |
| Chân 32 | RD4 — Bidirectional I/O |
| Chân 33 | RD5 — Bidirectional I/O |
| Chân 34 | RD6 — Bidirectional I/O |
| Chân 35 | RD7 — Bidirectional I/O |
| Chân 36 | AVDD — Analog positive supply |
| Chân 37 | AVSS — Analog ground |
| Chân 38 | SEG0 — LCD segment 0 driver |
| Chân 39 | SEG1 — LCD segment 1 driver |
| Chân 40 | EP — Exposed thermal pad - must be soldered to ground pour |
Ứng dụng tiêu biểu
PIC16LF1934T-I/MV phù hợp cho 7 Áp dụngs: Battery-Powered Sensor Node, Home Appliance User Interface with LCD, Consumer Remote Control, Industrial Sensor Hub with mTouch, Low-Cost Instrumentation Front-End, Capacitive Touch Keypad Module, Small Motor Control / PWM Driver.
Battery-Powered Sensor Node
The PIC16LF1934T-I/MV's nanoWatt XLP technology drops sleep current to roughly 50 nA with the 32 kHz RTC running, enabling multi-year coin-cell life in wireless sensor nodes. Its 10-bit ADC with up to 14 channels directly digitizes analog sensor outputs without external signal conditioning, while the 7 KB Flash accommodates application firmware plus MPLAB Xpress cloud-generated code. Compared with discrete microcontroller-plus-RTC designs, the integrated PIC16LF1934T-I/MV reduces BOM count and PCB area.
Được đề xuất
Home Appliance User Interface with LCD
The PIC16LF1934T-I/MV integrates a 96-segment LCD controller that directly drives a TN/STN glass display without an external charge-pump or COG driver, simplifying white-goods, microwave, and HVAC interface boards. Its 35 I/O lines accommodate up to 20 segment pins plus keypad matrix scanning, while the integrated mTouch peripheral handles capacitive buttons on the same die. The 1.8 V to 3.6 V supply range enables direct 2-cell alkaline operation without an LDO.
Được đề xuất
Consumer Remote Control
With sleep current near 50 nA and wake-up time under 5 µs, the PIC16LF1934T-I/MV is purpose-built for IR/Zigbee remote controls that spend 99 percent of their life in deep sleep. Its mTouch capacitive-sensing peripheral enables touch-pad interfaces on smart-TV remotes, while the 10-bit PWM channels drive IR-LED modulation directly without external drivers. Compared with 32-bit Cortex-M alternatives, the PIC16LF1934T-I/MV costs less and runs from a single CR2032 cell for years.
Được đề xuất
Industrial Sensor Hub with mTouch
The PIC16LF1934T-I/MV's mTouch capacitive-sensing module supports up to 16 touch channels without external components, enabling sealed front-panel designs in factory automation and process-control HMIs. Its industrial -40 °C to +85 °C temperature range and brown-out reset circuitry ensure reliable operation on noisy 24 V-derived rails. Designers benefit from PIC's deterministic interrupt latency for safety-critical button-debounce and emergency-stop handling.
Được đề xuất
Low-Cost Instrumentation Front-End
The PIC16LF1934T-I/MV combines a 10-bit ADC, two comparators, and an op-amp-capable internal analog structure on a single die, allowing direct interface with thermocouples, RTDs, and strain gauges in low-cost measurement instruments. The 32 MHz CPU supports real-time linearization and calibration algorithms, while the EUSART provides RS-232 or RS-485 connectivity via an external transceiver. Compared with analog-only designs, the integrated PIC16LF1934T-I/MV eliminates the need for a separate signal-conditioning ASIC.
Được đề xuất
Capacitive Touch Keypad Module
The PIC16LF1934T-I/MV integrates Microchip's mTouch peripheral with hardware-driven acquisition, supporting up to 16 capacitive buttons or a 4x4 matrix with no external components other than the sensor traces themselves. Its 32 MHz core handles proximity detection and backlight PWM in real time while still drawing sub-microamp sleep current for battery-operated keypads. The 40-pin UQFN (MV) package keeps the design footprint under 25 mm² for compact wall-mounted controllers.
Được đề xuất
Small Motor Control / PWM Driver
With five PWM channels and a 32 MHz CPU, the PIC16LF1934T-I/MV can drive brushed DC, unipolar stepper, or small BLDC motors in appliances and toys. Its comparators enable hardware overcurrent protection without CPU intervention, while the 10-bit ADC samples motor current at the PWM frequency for closed-loop torque control. Compared with discrete analog motor controllers, the PIC16LF1934T-I/MV adds programmable acceleration profiles and diagnostic UART logging.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LF1934T-I/MV — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC16LF1934-I/MV | PIC16LF1933T-I/MV | PIC16LF1933-I/MV |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-pin UQFN (MV) 5x5 mm | 40-pin UQFN (MV) 5x5 mm - same | 40-pin UQFN (MV) 5x5 mm - same | 40-pin UQFN (MV) 5x5 mm - same |
| Program Memory (Flash) | 7 KB | 7 KB | 3.5 KB (-50%) | 3.5 KB (-50%) |
| Data EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Data SRAM | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| I/O Pins | 35 | 35 | 36 (+1) | 36 (+1) |
| ADC | 10-bit, 14 channels | 10-bit, 14 channels | 10-bit, 11 channels | 10-bit, 11 channels |
| LCD Driver | 96 segments | 96 segments | 64 segments | 64 segments |
| Sleep Current (typical) | ~50 nA (nanoWatt XLP) | ~50 nA | ~50 nA | ~50 nA |
| Packaging | Tape & Reel | Tray | Tape & Reel | Tray |
Bảo phân biệt quan trọng
- Integrated 96-segment LCD controller eliminates external COG driver (vsPIC16LF1933T-I/MV)
- Full 7 KB Flash doubles firmware headroom over the family (vsPIC16LF1933T-I/MV)
- Reel-ready packaging variant for high-volume pick-and-place (vsPIC16LF1934-I/MV)
- More ADC channels for higher sensor-count applications (vsPIC16LF1933T-I/MV)
Ghi chú thiết kế
Estimated (using VIN=2.0V, VDD=3.3V via boost): a CR2032 coin cell rated 220 mAh at 2.0 V can supply the PIC16LF1934T-I/MV for over 5 years when the device wakes once per minute for a 10 ms sensor read and returns to ~50 nA sleep. Designers should disable the WDT and unused peripherals in active mode and switch to the internal 31 kHz LFINTOSC during sleep to minimize current draw.
The UQFN-40 (MV) package has a thermal resistance (theta_JA) of approximately 33 °C/W when the exposed pad is soldered to a 1 square inch ground pour on a standard 4-layer JEDEC test PCB. At the industrial -40 °C to +85 °C operating range, this leaves ample headroom for the typical 8 mA active CPU current at 32 MHz. Ensure the exposed pad is fully soldered for both thermal dissipation and electrical ground reference.
Place a 100 nF ceramic decoupling capacitor within 5 mm of the VDD/AVDD pins, plus a bulk 10 µF tantalum or ceramic capacitor near the IC supply pin. Route the 32.768 kHz crystal traces symmetrically and as short as possible to the SOSC0/SOSC1 pins to minimize load capacitance error. The UQFN-40 land pattern requires a non-solder-mask-defined (NSMD) pad with an opening of 0.30 mm pitch.
Do not leave the MCLR pin floating - either tie it to VDD through a 10 kΩ resistor or drive it with a pushbutton reset network. The LCD segment pins are multiplexed with standard I/O; configure the LCDCON register before assigning those pins as GPIO. The mTouch sensing inputs require a guard ring or grounded trace nearby to prevent false triggers from adjacent switching signals.
For long traces to the ADC inputs, add a small RC filter (100 Ω + 1 nF) to limit noise bandwidth below the Nyquist rate. Avoid routing switching signals (PWM outputs, clock traces) parallel to analog inputs to prevent coupling. The internal bandgap reference settles in approximately 1 ms after enabling; allow adequate acquisition time before starting a conversion.
Thông tin tuân thủ
RoHS and REACH compliance per Microchip product page. Industrial temperature grade only - AEC-Q100 qualification not available for this part number. Choose PIC16LF1934-E/MV (extended temperature) or AEC-Q100 qualified PIC variants for harsh-environment applications.
